Let's say I have $2000 in my Roth IRA and I buy 200 shares of a $9 stock (for simplicity). That's $1800 plus whatever fee my broker charges me. Now lets say that stock goes up to $18 the next week. So now I have roughly $3600 in my account (18 x 200). Let's say I sell the stock. I know I pay my broker's fee when I sell it, but am I right in saying I won't pay any capital gains tax on the money I made?